One person died in a Greeley house fire tonight, and firefighters are searching for the cause.

Union Colony Fire/Rescue Authority firefighters were called to the scene at 1913 5th St. shortly after 9 p.m. on a report of an attic fire. They have closed 5th Street at about 19th Avenue, according to Union Colony spokesman Dale Lyman.

When firefighters arrived, heavy smoke was rising from the home, Lyman said. Inside the home, firefighters encountered a lot of objects and clutter, but they were able to locate the one victim, Lyman added. The identity of that victim has not been released.

Firefighters received a report that there were two people in the residence, but they did not find another person inside.

Greeley police also responded to the scene and will be conducting a joint investigation with the fire department. Animal control officers also were called to the scene.

The cause of the fire and the damage estimate is not available at this time.